How do I get my Kolkata GST refund processed under the state GST rules?

Processing of your GST refund in Kolkata is governed by the central GST Act read with West Bengal Premises Tenancy Act 1997, which adapts the refund procedure for the state component of the tax. You must file the refund application on the GST portal with the relevant returns, the export documents or inverted duty proof, and the bank account details, and the jurisdictional officer verifies the claim before sanctioning. The Calcutta High Court has held that the officer must process the refund within the statutory period of ninety days and that interest is payable on delay, and rejection must be a reasoned order. If the refund is delayed or wrongly rejected, you can file an appeal before the Appellate Authority under West Bengal Premises Tenancy Act 1997 and thereafter a writ in the Calcutta High Court. Keep the RFD application number, the export invoices, and the bank statement showing non-receipt, as these are essential to prove the entitlement and the delay.